我试图在用户下载了一个文件后添加一个数字,但我所做的一切都不起作用。
$download = "INSERT INTO table (user_id,post_id)
VALUES('$username','$postname')";
$query = mysqli_query($con,$download);
$post_data= "UPDATE posts SET downloaded = downloaded+1 WHERE post_id='$postname' AND user_id= '$username'";
/*
* The problem is here
*/
$update_post_data = mysqli_query($con,$post_data);
我尝试过其他方法,比如“downloaded”=“downloaded”+1和“downloaded”+1,但都不管用。我该怎么办?
